Apparatus for applying polishing material



Sept. 22, 1925.

F. GELSTHARP APPARATUS FOR APPLYING POLISHING MATERIAL 2 Shawls-Sheet 1 Filed Juna 1921 Sept. 22, 1925. v I 1,554,809

GELSTHARP APPARATUSF-OR APPLYING Pomsxmw MATERIAL I Filed June 6, 1921 2 shuts-she; 2

FIB.Z,

Patented Sept. 22, 1925.

UNITED STATES 1,554,809 PATENT OFFICE.

FREDERICK GELSTHARP, OF T ARENTUM, PENNSYLVANIA, ASSIGNOR T0 PITTSBURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.

APPARATUS FOR APPLYING POLISHING MATERIAL.

Application filed June 6,

To all whom it may concern:

' Be it known that I, FREDERICK GnLsTHARr, a subject of the King of Great Britain, and a resident of Tarentum, in the county of Allegheny and State of Pennsylvania, have made a new and useful invention in 1mprovements in Apparatus for Applying Polishing Material, of which the following is a specification.

The invention relates to apparatus. for applying polishing material. such as rouge to a polishing machine. The machine illustrated is a plate glass polisher of the rotary type, but it will be understood that the 1nvention is not limited to use with this particular machine Which may vary widely in construction, and which for simplicity of illustration is shown in a somewhat diagrammatic form. The invention has for its primary object the provision of an arrangement which will insure a uniform feed of material from a single source through a plurality of supply pipes leading to different parts of the polisher. Certain embodiments of the invention are illustrated in the accompanying drawings, wherein:

Figure 1 is a diagrammatic plan view showing a four runner plate glass polishing machine with the ends of four supply pipes leading thereto. Fig. 2 is a side elevation partially in section of the construction of Fig. 1 and the feed apparatus to which the invention particularly relates, and Fig. 3 is a perspective view showing a modified 'feed construction.

Referring to Figs. 1 and 2, 1 is a polishing table over which are mounted four runners, 2, 3, 4 and 5, each mounted to rotate about its axis and provided with a plurality of runner discs 6, having the usual facing of felt. The table is driven in a clockwise direction, as indicated by the arrow in Fig.

1. which causes a rotation in a similar direction of the four runners. A polishing mixture of rouge and water is supplied to the table through the pipes 7, 8, 9 and 10, the said pipes delivering in front of the runners as indicated in Fig. 1 so that each runner has its own individual supply of polishing material.

The pipes are fed from the supply tank or hopper 11,v as indicated in Fig. 2. The hopper 11 delivers to the distributor 12, mounted so as to pivot freely at 13 and 1921. Serial No. 475,503.

comprising a air of triangular receptacles 14 and 15. T e receptacles 14 and 15 are adapted to discharge into the hoppers 16 and 17, depending upon the position assumed. by the distributor 12, suitable stops 12 being provided tolimit the tilting of the distributor. lVhen the distributor is in the position indicated in Fig. 2 it discharges into the hopper 16, and at this time a mixture of the water and rouge is a cumulating in the receptacle 15, such accumulation continuing until the weight of the mixture over-balances the distributor and causes it to tilt so as to discharge into the hopper 17, thus bringing the receptacle 14 into receiving position. This back and forth movement of the distributor will con.- tinue automatically, so that the supply of rouge and water is equally distrilmted between the two hoppers-16 and 17 Beneath the hoppers 16 and 17 are other distributors 18 and 19, each comprising a pair of triangular receptacles and corresponding in action with that. heretofore described in connection with the distributors 1.2, the arrangement being such that the distributor 18 divides its material equally between the hoppers 20 and 21 and the distributor 19 divides its material equally between the hoppers 22 and 23. In this way the supply of material from the hopper 11 is equally divided and distributed between the four hoppers 20, 21, 22 and 23 and the four supply pipes 7, 8, 9 and 10.

he above arrangement gives an even supply of polishing material to the runners and to all parts of the table, such as would not be secured by the use of four pipes leading directly from the hopper 11, as the quantity of material fed is relatively small and the pipes must'be made small, and as a result they tend to clog, so that where a plurality of pipes are supplied simultaneously from the same source, the How from the pipes soon becomes uneven. The arrangen'ientalso gives a better supply to all parts of the table than is the case where all of the material is supplied through a single pipe, since in that case the distribution from the point of supply to the various portions of the table is not at all uniform, certain of the runners getting a relatively small supply of material as compared with others and certain parts of the table being exposed to the action of less polishing material than others all ofwhich tends toproduce uneven polishing. V i

The arrangement as shown is applied to four pipes, but it will be understood that this number may veit her be decreased or iiicreased, depending upon requirements, and that the shape of the distributors may be modified to a considerable extent.

In the modification illustrated in Fig. 3, the distribution fronithehopper 24 to the supply pipes 25, 26 and 27, etc., leading to the polishing machine is secured by means of a rotating spout 28. This spout is arranged to discharge successively into the compartments 29, 30, 31 and 52 and is rotated by means of a belt 32 extending around the pulley stand around a corresponding pulley on the aile of one of the polishing runners. The upper end of the spout 28 is provided with the funnel 35-for receiving the mixture of water and rouge from the spigot 36. This arrangement gives a distribution co-rre-- sponding to that secured by the construction of Fig. 2. In this construction or in that of Fig. 2, the four pipes may be made as large as desired so that-there is no danger of clogging.

What I claim isi 1. In combination with a polishing inachi'ne, a plurality of supply pipes leading to dill'ereut parts of the machine, a source of supply of a mixture of water and polishing material, an outlet from the source of supply, and automatic shifting means intermediate the outlet. and said pipes whereby the How from the outlet is divided and each pipe supplied intermittently with a predeter mined proportion of the mixture.

2. In combination with a polishing machine, a plurality of supply pipes'leading. t'o diil'erent parts of the machine and each tion of said discharge to each of said receiving receptacles.

3. In combination'with a polishing machine, a plurality of supply pipes leading to different parts of the machine and each provided with a receiving rece tacle, a source of supply of a mixture of water and polishing material, anoutlet from the source of supply, and automatic means intermediate said outlet and the receptacles operated by the flow of the mixture for sup-plying said receptacles successively and intermittently .from said discharge outlet.

In testimony whereof, I have hereunto subscribed my name this 18th day of May,

FREDERICK GELS'IHARP. 

